# num = 3
# def fun():
#     num = 5
#     print('函数内局部变化num的值：',num)
# fun()
# print('函数外全局变量num的值：',num)


# num = 5
# def fun():
#     global num
#     num += 1
#     print('函数内num的值:',num)
# fun()
# print('函数外num的值:',num)


# def outer():
#     num = 1
#     def inner():
#         nonlocal  num
#         num = 2
#         print('inner函数中 num 的值：',num)
#     inner()
#     print('outer函数中 unm的值：',num)
# outer()

#
# stu = [{'num':'201801','name':'王五','score':89},
#     {'num':'201802','name':'刘军','score':95},
#     {'num':'201803','name':'李梦','score':85}]
# stu.sort(key=lambda x: x['score'])
# for s in stu:
#     print('学号：',s['num'],'姓名:',s['name'],'成绩：',s['score'])